论文部分内容阅读
研究对南方7省抗白粉病栽培大豆种质资源进行了筛选,以期获得抗性大豆资源,为杂交育种培育抗病品种提供优异亲本,并探讨了栽培大豆的抗病资源分布和白粉病的防治。供试材料分别来自海南、广东、湖南、广西、福建、四川、江西7个省(区)。在白粉病高发期进行田间调查,同时采用喷雾接种法进行人工辅助接种,待充分发病后,分3次进行植株发病情况调查。结果表明:在285份栽培大豆资源中有161份材料表现为抗病反应,占鉴定资源总数的56.5%;33份资源为中间反应类型,占11.6%;91份资源表现为感病反应,占31.9%。对栽培大豆资源的来源分析表明:广西的栽培大豆资源抗性最丰富,占78.6%;其次为广东和四川,抗性比例分别为75.0%和64.5%。
This study screened soybean germplasm resources resistant to powdery mildew in seven southern provinces in order to obtain resistant soybean resources, provide excellent parents for breeding resistant varieties, and discussed the distribution of disease-resistant resources and control of powdery mildew in cultivated soybean . Test materials were from Hainan, Guangdong, Hunan, Guangxi, Fujian, Sichuan, Jiangxi 7 provinces (regions). In the high incidence of powdery mildew during the field investigation, while using spray inoculation artificial assisted inoculation, to be fully after the onset, the plant disease in three times survey. The results showed that 161 of 285 cultivated soybean resources showed resistance to disease, accounting for 56.5% of the total identified resources; 33 were intermediate reaction types, accounting for 11.6%; 91 were susceptible to susceptibility reactions, accounting for 31.9%. The source of cultivated soybean resources showed that the cultivated soybean resources in Guangxi were the most resistant, accounting for 78.6%; followed by Guangdong and Sichuan, with the resistance rates of 75.0% and 64.5% respectively.